1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe913a803eb9ba9672cc86621c238ed66caa80b380ccf68fbc3f46399db3a08d7. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2be7b51c-450e-4eea-bcb1-847f03d4cd3e.json and https://artists.proofprofile.net/proofs/artist/2be7b51c-450e-4eea-bcb1-847f03d4cd3e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213afa4ec0c367ecdae371c9875d29640c603f0b7da576f1c979690842f9d61d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45aac34851b343e1c093d42d7391fd47dc45def6a8e331537ba06e4ba232f46c. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047628e50c0ce76dee12a18d8cb4f367225112949042067a950c229e0b2124e5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3886c05711c7bd9bcfe53d67b8e382a1b37d630320cde224ea256798dcb23eb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef972559ef366ab244b7f1e5f3b2f4e5b88a2d4432c1470d0d1f9440a1cd775. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fde72d2840d08e2ef6b7283ac946407ff02e095cbe9745d5aabd0dd527b4cc. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac195d1b7b710a49861e13bda6c9aea6c2f293fd2190cf0096388741d5947b93. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81869154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9543e95eb60df582bc47324d33b2e8deda054a915d1cc6b6853546c1a3fe0a88. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81869156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3fcc99882c8cbc77bfea1effc0d447674f9e6373dbdd4945ad43c55119708b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81869157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b20cc77763be0773ab01373db8c5cf66f0c60ed39c7543484b8c8e7efa810ab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81869159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883df7c550ceba2843a0904e097c995a90ab5b8c36477a42ff0d1e5eb05147d9. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81869161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc50f96c0569503349deca2aeda130c6b3791b5f47b640ebe39410bc7d6577fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81869162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fb83405c2fcedb5df1ee40128980d943ba19bbd4d2c2f5b28024b9e39343a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81869163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5879be3a0c0d6f92674942b58642c8e8a49159c639949818e7323e2fe3833e8e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2472308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28eb751d78ce4a60bc5dd942b2ae7a3533601fe3203da51bd236f0114e03274d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2647c28a0b6fcd45bbdb9dc863d81be4c4b0f3381d63f46aa4f8e3b899b2b7fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA242200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6748117b5dcbefef8d35ec3209fc00440c2d72ae1cff0724fd288fb7b23e028b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2242281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb707a0be94c2b94a8fba199f583b4c34dcd619f9d5b5ea107fe03159457700. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2105365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7043fd736216a755612b6cebc1b570d3b257f925729c5a5df5e1d876ad1107. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q1949928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5720d728f114465888bd02f5b18b4142a72d5c99bd3a809b6759ba346a19731. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21926837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1f03f61b8774052f50b9c4ba6bafe168a50f27349ac84babe9a70f2ed0aee9. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1954839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194f75bbc4a188854f35f894ab1f38a8968e1c63bcc92e62afa6be56778869a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81892062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbab4427826420db36fb6ad6b0cda2027680c62ae54ee6a5aef100e1565c9c3. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91811054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27c5f4cb4ce77f98c74570ad5718d26c4854019c84cc293af14fd628160d34e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2481453.
Viva Diciembre Grandes Exitos para Bailar en Navidad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa50621487cc2ef36c3fd7ab8e60696d851963a87ca8853dcdcdb4cbd14f1d45. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2300381.